问题补充：
---His brother John began to study French last year. And now he is good at it. He is so talented.
--- He always learns things quickly.
A. So did his brother
B. So is his brother
C. So his brother is
D. His brother so did
答案：
A. So did his brother
B. So is his brother
(答案→)C. So his brother is
D. His brother so did
解析：句意：--他的弟弟约翰去年开始学习法语。现在他擅长法语。他很有才华。--他弟弟确实是这样。他总是学东西快。1.so可以用作连词，表示“因此，所以”。例：I heard some noise outside, so I went out of the room to see why.so that作为连词词组，表示 “以便，为了”。例：The vase is put high on the table, so that it won’t be broken.2.so可以用作形容词，表示“是这样的，是真的”。例：The newspapers claim she killed him in self defence but that just isn’t so.3.so可以用作副词，表示——1)“如此，这么”结构为：so+adj./adv例：She was so tired that she fell asleep very fast.表示此意思时，还可以用：so+adj.+a/an+n.例：It is so good a movie that everyone who saw it praises it very much.2)“如此，如是”，用于表示已经提到的想法，建议或情况等例：“Will I need my umbrella?”“I think so.”3)“也是，也一样”结构为so+助动词/情态动词/be动词+主语。例：Tony takes exercise every day and so does his younger brother.注意否定句应把so改为neither/nor，结构为neither/nor+助动词/情态动词/be动词+主语例：Jenny has never been late for class. Neither/Nor her younger brother.4)“确实是这样”，表示对前面陈述事实的强调，结构为so+主语+助动词/情态动词/be动词。例：Tony works very hard at all the subjects.So he does.所以选C。
